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Special activated charcoal for gasoline vapor adsorption and preparation method thereof

A technology for adsorbing gasoline and activated carbon, applied in chemical instruments and methods, and other chemical processes, can solve the problems of unsatisfactory decolorization and adsorption performance, achieve excellent adsorption and decolorization performance, reduce adsorption and decolorization carbon consumption and sewage discharge, and high The effect of mechanical strength

Active Publication Date: 2009-11-18
CHAOYANG SHENYUAN ACTIVE CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the activated carbon prepared by this method has good particle strength, its decolorization power and adsorption performance are still not ideal.

Method used

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  • Special activated charcoal for gasoline vapor adsorption and preparation method thereof
  • Special activated charcoal for gasoline vapor adsorption and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: 100kg raw material apricot shells are put into carbonization furnace at 500 ± 50 ℃ of carbonization 2 hours, after being cooled to room temperature, carbonization material is put into dipping tank, with 5kg 85% phosphoric acid, 8kg magnesia and 100kg water, Prepare an impregnating aqueous solution, impregnate the carbonized material (the standard of the liquid level of the impregnated liquid is - subject to immersion in the carbon layer), soak at room temperature for 6-8 hours; then put the impregnated carbonized material in a drying oven at 400± Drying at 50°C; the carbonized material carrying the impregnation is activated at 800±50°C for 8 to 12 hours under the condition of passing overheated steam, and then the activated material is pickled with 10% hydrochloric acid aqueous solution. The material is dried at 400±50°C for 1 to 2 hours, and crushed to 20 to 60 mesh particles.

Embodiment 2

[0023] Example 2: Use wood tar as a binder and add coal powder to press into a columnar shape. Take 100kg of pressed material and carbonize it in a carbonization furnace at 500±50°C for 3 hours. After cooling to room temperature, put the carbonized material into a dipping tank. 5kg of 85% phosphoric acid, 10kg of magnesia and 100kg of water are prepared into an impregnating aqueous solution, impregnated with carbonized material (the standard of the liquid level of the impregnating solution is - subject to immersion in the carbon layer), and soaked at room temperature for 6 to 8 hours; The impregnated carbonized material is dried in a drying furnace at 400±50°C; the carbonized material carrying the impregnated material is activated for 8-12 hours at 800±50°C under the condition of passing through superheated steam, and then treated with 10% Pickle with hydrochloric acid aqueous solution, then dry at 400±50°C for 1-2 hours, and crush to 20-60 mesh particles.

[0024] Process par...

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Abstract

The present invention is a special activated carbon for absorbing gasoline vapor and its preparation method. The activated carbon is prepared by using hard fruit shell or coal as a raw material and adopting a method of treating carbonized material with a physical and chemical impregnation activation method. The impregnating solution is mainly composed of phosphoric acid and oxidized The aqueous solution composed of magnesium, the weight ratio of each component is phosphoric acid: magnesium oxide = 1: 1.5 ~ 2.5, the iodine adsorption value of the prepared activated carbon is 800 ~ 1000mg / g, the vapor adsorption rate of finished gasoline is 26 ~ 45%, and the mechanical strength ≥95%. The raw materials are processed into products through carbonization, impregnation, drying and activation. The product of the present invention not only has an excellent ability to adsorb and remove macromolecular pigments, but also has high mechanical strength of conventional physical carbon, and the product is widely used; the activated carbon can greatly reduce adsorption carbon consumption and sewage discharge in the utilization of adsorption process, Greatly reduce the pollution caused by adsorption to water quality and the atmosphere; the activated carbon has changed from one-time use to repeated use and repeated regeneration, and the adsorption decolorization system has been in continuous operation for a long time.

Description

technical field [0001] The invention relates to a granular activated carbon used for adsorption and decolorization, in particular to a special activated carbon used for absorbing gasoline vapor and a preparation method of the activated carbon. Background technique [0002] The pollution of the environment by automobiles has become the first source of urban air pollution. The pollution of the atmosphere by automobiles mainly comes from the evaporation of automobile exhaust and fuel gas, of which exhaust pollution accounts for 70% and fuel vapor pollution accounts for 30%. At the end of the 1960s, the United States studied the use of activated carbon to absorb gasoline vapor in automobiles. Due to the high technical content of this activated carbon, wood is used as raw material and the production cost is relatively high. At present, this special activated carbon relies on imports in China, and the import price is about 8 per ton. ~100,000 yuan / ton. [0003] The applicant disc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/12C01B31/08B01J20/30
Inventor 李国君古可隆
Owner CHAOYANG SHENYUAN ACTIVE CARBON
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